I find the rigid plastic hoods taking up too much space (unattached) or inconvenient (attached and reversed). Moreover, they place some stress on the part of the barrel that moves when mounting. I don't usually carry mine.

My (not totally adequate) solution is to mount a collapsible wideangle rubber hood when I need it - one that screws into the filter threads. This marks me down as a rather old person and a refugee from the film days.

However, a hood isn't needed at all times and the rubber ones fold down to almost nothing. The disadvantage is that it is a wideangle hood, but it does give some useful extra shade (and the cutouts reduce the effectiveness of the dedicated shades in any case).

But this is just my way of doing things. More than a few times I've used the always available "hand" solution, with occasional interesting effects in the sky!